Hot-water heater



(N0.Mode1.) '2 Sheets-Sheet 1.

W. VANDBRMAN.

HOT WATER HEATER.

No. 522,499. Patented July 3,1894.

(No Model.) 2 Sheets'Sheet 2. 1 W VANDERMAN.

HOT WATER HEATER Patented JulyB, 1894.

nms PETERS no momu'mo ww-unmuu, n. (3.,

the same.

UNITED STATES.

' PATENT OFFICE.

WILLIAM VANDERMAN, OFWlLLIMANTIO, CONNECTICUT.

HOT-WATER H EATER.

SPECIFICATION forming part of'Letters Patent No. 522,499, dated July 3,1894. Application filed March 10, 1893- Serial No. 465,449- (No model.)

To all whom it may concorm Be it known that I, WILLIAM VANDERMAN, ofWillimantic, in the county of Windham and State of Connecticut, haveinvented certain new and useful' Improvements in'Hot- Water H eaters,'of which the following is a full, clear, and exact description, wherebyany one skilled in the; art can make and use This invention relates toimprovements in hot water heaters; the object of the invention being toprovidea combined boiler and furnace adapted to supply hot water forheating dwelling houses and'public buildings, and to construct the samein sections and provide means whereby absolutely water tight joints aresecured, and to so arrange the parts that the maximum amount and auniform radiation of heat is secured with the minimum quantity of fuel.

To this end my invention consists in the special construction and in thecombination and arrangement of the several parts making up the device asa whole as more particularly hereinafter described and pointed out inthe claims, I

Referring to the drawings: Figure 1 represents' in front elevation ahotwater heater embodying my improvements; Fig.2 a central longitudinalsection of the same (on dotline a 00, Fig. 4) the base being removed;Fig. 3 a detail in plan view of the device for operating thedraft door;Fig. 4 a cross-section on enlarged scale'taken on dotted line y y, Fig.2; Fig.5 details of portions of the up per and lower boiler sectionsshowing plan views of the joints between water-ways, and

' Fig. 6 is a vertical section of aportion of the boilers taken ondotted line z 2, Fig. 4.

My improved hot water heater comprises a furnaceand an outer boilerinadeup in sections having specially constructed joints secured togetherby bolts, as hereinafter more particularly described, and an innerorsupplementalboiler havingflpassages between it and the outer boilerand also having water compartments or Ways for the circulation of waterand flues for the circulation of flame, hot air and the gases ofCombustion.

In the accompanying drawings the letter 0. denotes the hollow base whichforms the ashing of any suitable construction.

Upon the base a. is supported the outerboiler which preferably comprisestwo sections 6, b, bolted together at'c as hereinafter described. IThese sections of theouterboiler are each made as hollow tubes with awater compartment 1, Z, between their outer and inner walls, as clearlyshown in Fig. 2, said compartments being closed atthe upper and lowerends, as at 17?. .Water-ways d are formed through the adjacent endplates of the boiler sections 19, b, to establish communication betweenthe Water compartmentsl, Z, of the said sections, which water ways areformed at certain intervals around said sections, as will be hereinafterdescribed.

The lower section b contains the fire-pot b andthe upper section b has adome b to form a water compartment of large area, a series of smokeflues I) being extended through the rectly to the smoke-bonnet b whenceit passes into the smoke stack or chimney through the outlet b see Fig,2.

As shown in the drawings the outer boiler is made in two sections, thishowever is 0p tional, as the same might be practically made in two ormore sections, as circumstances might require.

Suspended within the outer-boiler, as shown clearly in Fig. 2, is aninner or supplemental boiler e, having a series of circumferentiallyarranged water compartments 3, 5, and 7, with radially arrangedwater-ways 8 in communication therewith, and alternating hot airconduits or fiues 4:, 6. All of the watercompart 'ments of the innerboiler are closed at the up- 7 with a nut f at its upper end.

Communication is established between the water compartments of the innerand outer boilers by a series of circulating pipes g, which extendthrough the outer plate of the inner boiler near its lower 'end, outthrough the outer boiler, as shown in Fig. 2, and thence down where theyconnect with return pipes 9, one end of each return pipe being extendedthrough the lower section and terminating in the water compartment Z,near the lower end of the outer boiler, and the opposite end beingconnected with the outlet pipes or returns from the radiator or heater(not shown) in any part of the building. A series of risers h openinginto the dome b of the outer boiler and connecting with the inlet pipesof the radiator (not shown) conduct the hot water from saidboilerthrough the radiators whence it is returned through the returnpipes up through the circulating pipes and into the inner boiler whereit is heated in its circulation through the water comparments of thesaid boiler and afterward allowed to rise through the central pipe finto the dome of the outer boiler where it is again carried through therisers, and so on indefinitely. The course of circulation is denoted byarrows in Fig. 2.

The lower section b of the boiler has outwardly projected flanges 2'having, preferably, an elliptical groovej formed therein as shown inFigs. 5 and 6, which receives a depending flange j of the upper section.These flanges form the attaching plates of the sections, bolts 0 beingextended through said plates or flanges, as shown. A packing 7c ofcement or fibrous material will preferably be interposed between theflanges as shown in Fig. 6, to secure a water tight joint when thesections b, b are secured together.

Located above the outer-boiler within the smoke-bonnet is a circulatingcoil Z consisting preferably of a spirally bent tube in communicationwith the water compartment of the outer boiler,and fulcru med upon astandard l is a lever Z one end of which is in contact with the end ofthe coil land is provided with a ropejor chain at its opposite end,which is connected, through the medium of suitable pulleys or otherdevices (not shown), to the draft door or damper whereby the expansionand contraction of the coil Zwill regulate the draft as desired. Aseries of openings is provided in the smoke bonnet aligned with thesmoke lines 17'' for convenience in cleaning said flues, said openingsbeing provided with removable caps m as shown.

The vertical circulating pipes g will be provided with expansion jointsg to allow for variation in compactness between the joints of the boilersections.

I claim as my invention- 1. In a hot water heater in combination, asectional outer boiler having a continuous water chamber located betweenits inner and outer walls on side and top, the smoke flues extendingthrough the water compartment in the dome, the inner boiler suspendedwithin the outer boiler and forming a water compartment, the tubularinterior water connection between the bottom wall of the dome and thetop wall of the inner boiler, the smoke flues extending through theinner boiler, the combustion chamber located between the inner and outerboilers, a riser extending from the outer boiler, and the circulatingpipes communicating between the lower part of the water compartments ofthe two boilers, all substantially as described.

2. In a hot water heater, in combination, the sectional outer boilerincluding an upper and lower section, the Water compartment locatedbetween the inner and outer walls of the lower section, the fire potlocated within the inner walls of the lower section, the upper sectionhaving the water compartment be tween its inner and outer walls on sideand top, the water ways extending between the two sections, the smokeflues extending through the dome of the upper section, the inner boilersuspended within the outer boiler and forming a water compartment, theinterior tubular connection between the inner and outer boilers thetines extending through the inner boiler, the combustion chamber locatedbetween the inner and outer boilers, the risers extending from the uppersection of the outer boiler, and the water-ways communicating betweenthe two boilers, all substantially as described.

3. In a hot water heater, in combination, the sectional outer boilerhaving the continuous water compartments located between its inner andouter walls, and in the dome located in the upper part of the boiler,the fines extending through the dome into the smoke bonnet, the smokebonnet located above the dome, the inner boiler suspended within theouter boiler by an interior tubular connection and forming a watercompartment, the fiues extending through the inner boiler, thecombustion chamber located between the inner and outer boilers, therisers extending from the outer boiler, and the circulating pipesconnecting the two boilers, all substantially as described.

4.. In a hot water heater in combination, a sectional outer boilerhaving a continuous water chamber located between its inner and outerwalls above the base, the smoke flues extending through the watercompartment, the inner boiler suspended within the outer boiler by atubular joint forming a connection between the water compartments of theinner and outer boiler, the smoke flues extending through the innerboiler, the combustion chamber located between the inner and outerboilers, risers extending from the outer boiler, and the circulatingpipes communicating between the water compartments of the two boilers,all substantially as de scribed.

5. In a hot water heater in combination, a sectional outer boiler havinga water cham- IIO ber located between its inner and outer walls, andadome formed in the upper part of the upper section of the boiler, thesmoke flues extending through the dome and water compartment of theouter boiler, the inner boiler suspended within the outer boiler andforming a water compartment, the smoke flues extending through the innerboiler, the combustion chamber located between the inner and outerboilers, a smoke drum located on the upper part of the outer boiler andcommunicating with the smoke flues therein, a coil of expanding pipeslocated within the

